At the risk of appearing an idiot I will describe this problem. I have the mid bath 78 Argosy 28 the sink is on the right of the shower stall. I have replaced the shower faucet w silicone and don't think that any water could be getting through there. However I get water under the shower that I can feel reaching under the sink cabinet that I feel on top of the wheel wells. The shower is pretty well caulked so that's not it. Maybe it's water leaking down inside the wall? Anyone have a guess? CA_Argonaut - living in it 10 days a month while under constant renonvation - 225 miles from home

Have you redone the plumbing vent stack where it penetrates the roof? Does it leak all the time or only when it rains? Shower drain, possible crack in the shower itself...that only shows up when you put weight on it?

Aaron

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At the risk of appearing an idiot I will describe this problem. I have the mid bath 78 Argosy 28 the sink is on the right of the shower stall. I have replaced the shower faucet w silicone and don't think that any water could be getting through there. However I get water under the shower that I can feel reaching under the sink cabinet that I feel on top of the wheel wells. The shower is pretty well caulked so that's not it. Maybe it's water leaking down inside the wall? Anyone have a guess? CA_Argonaut - living in it 10 days a month while under constant renonvation - 225 miles from home

Could the water be coming in form the outside? Take a look @ your lower trim, you may see it needs to be sealed. May look somethin like a this.

Do you have a shower valve with hose attached? If so, the hose attachment should be on the bottom, not the top. I found a similar problem with my trailer and couldn't figure out why water was dripping onto the toilet paper roll behind the shower and under the sink. I bought a new shower valve and after reading the instructions discovered that the original valve had been installed upside down. The valve is designed so that water in the hose to the shower head drains out into the valve body. With the hose coming out of the bottom, the water is able to drain out of the valve body into the shower. If installed with the hose connection on top, the water in the valve body collects and drains through the wall and into the adjoining compartment.

Thanks to all for suggestions resealing the vent is good advise - I have noticed water after rains on top of the tire well so outside trim leaking is something to look out for - well this is below the problem so even I know water doesn't roll up hill, and thirdly Thank you Alan as yes I do have the hose attached on the top which whooshes down and although I think it is well sealed it may not be. Aha!

I think my setup is similar - I was finding water in the cabinet under the sink. In my case the brass shower diverter in the cabinet (behind the shower stall, under the sink) had a plastic plug at the bottom. When I removed it to check it, I found that the threads were distorted and a new seal would not keep even with thread tape. So I went to the hardware store and bought a new plug (3/4" pipe) with a drain plug in the middle. I suspect the plug was plastic in the first place in order to act as a freeze plug (it would fail first and save the expensive brass diverter.) I always remove the small drain plug just in case there is still water after I winterize.